Texas Instruments MSP430x1xx - Manual (Page 85)

Instruction Set Overview
5-21
16-Bit CPU
5.3.4 Short Form of Emulated Instructions
The basic instruction set, together with the register implementations of the
program counter, stack pointer, status register, and constant generator, form
the emulated instruction set; these make up the popular instruction set. The
status bits are set according to the result of the execution of the basic
instruction that replaces the emulated instruction.
Table 5–18 describes these instructions.
Table 5–18.Emulated Instructions
Mnemonic Description Status Bits Emulation
V N Z C
ArIthmetic Instructions
ADC[.W] dst Add carry to destination * * * * ADDC #0,dst
ADC.B dst Add carry to destination * * * * ADDC.B #0,dst
DADC[.W] dst Add carry decimal to destination * * * * DADD #0,dst
DADC.B dst Add carry decimal to destination * * * * DADD.B #0,dst
DEC[.W] dst Decrement destination * * * * SUB #1,dst
DEC.B dst Decrement destination * * * * SUB.B #1,dst
DECD[.W] dst Double-decrement destination * * * * SUB #2,dst
DECD.B dst Double-decrement destination * * * * SUB.B #2,dst
INC[.W] dst Increment destination * * * * ADD #1,dst
INC.B dst Increment destination * * * * ADD.B #1,dst
INCD[.W] dst Increment destination * * * * ADD #2,dst
INCD.B dst Increment destination * * * * ADD.B #2,dst
SBC[.W] dst Subtract carry from destination * * * * SUBC #0,dst
SBC.B dst Subtract carry from destination * * * * SUBC.B #0,dst
Logical Instructions
INV[.W] dst Invert destination * * * * XOR #0FFFFh,dst
INV.B dst Invert destination * * * * XOR.B #–1,dst
RLA[.W] dst Rotate left arithmetically * * * * ADD dst,dst
RLA.B dst Rotate left arithmetically * * * * ADD.B dst,dst
RLC[.W] dst Rotate left through carry * * * * ADDC dst,dst
RLC.B dst Rotate left through carry * * * * ADDC.B dst,dst
Data Instructions (common use)
CLR[.W] Clear destination – – – – MOV #0,dst
CLR.B Clear destination – – – – MOV.B #0,dst
CLRC Clear carry bit – – – 0 BIC #1,SR
CLRN Clear negative bit – 0 – – BIC #4,SR
CLRZ Clear zero bit – – 0 – BIC #2,SR
POP dst Item from stack – – – – MOV @SP+,dst
SETC Set carry bit – – – 1 BIS #1,SR
SETN Set negative bit – 1 – – BIS #4,SR
SETZ Set zero bit – – 1 – BIS #2,SR